Monitor Docker metrics using Prometheus & Grafana

Prometheus and Grafana are great tools for both metric data collection and visualization. Using Prometheus and Grafana, here we shall create a dashboard to monitor Docker container. 

Assume, we have already a setup with Grafana & Prometheus  and a docker container.

To setup Prometheus & Grafana, Click here.

To setup Docker container, Click here

Step-1: Check docker service is active or not

[root@docker docker]# service docker status| grep active

Redirecting to /bin/systemctl status docker.service

     Active: active (running) since Thu 2023-03-30 06:03:24 UTC; 47s ago

[root@docker docker]#

Step-2 : Add below file in docker server/ machine

vi /etc/docker/daemon.json

{

 "metrics-addr" : "172.31.37.33:9393",

 "experimental" : true

}

[root@docker docker]# service docker restart

Step3: Check running containers if any

[root@docker docker]# docker ps -a

CONTAINER ID   IMAGE     COMMAND       CREATED         STATUS          PORTS     NAMES

deb6378efe5b   ubuntu    "/bin/bash"   2 minutes ago   Up 6 seconds              container5

e2967e62a390   ubuntu    "/bin/bash"   2 minutes ago   Up 14 seconds             container4

d044849ad38e   ubuntu    "/bin/bash"   2 minutes ago   Up 30 seconds             container3          container1

[root@docker docker]#

Step-4: Edit prometheus.yml file and restart Prometheus service

[root@grafana ~]# cd /home/ec2-user/prometheus/prometheus_setup/

# vi prometheus.yml

static_configs:

      - targets: ["localhost:9090"]

      - targets: ["172.31.37.33:9100"]

      - targets: ["172.31.37.33:9323"]   ## added for docker

!wq!

# systemctl restart prometheus.service

Step-5 : Now connect to Prometheus server and check this target status.

It should be "Up"

Step-6: Create new dashboard/ panel

use below PromoSQL

sum by(state)(engine_daemon_container_states_containers{})

Now you will have data in your panel: